Wrench



APl'il 9, l1929. H. G. NQRwoon 1,708,847

WRENCH Filed July 21, 1927 Illlllllll www@ Patented Apr. 9, 1929.

UNITED STATES HARRY G. NORWOQD, OF BALTIMORE, MARYLAND.

WRENCH.

Application l flied July 2i,

rlhis invention relates to new andnovel improvements in `one pieceadjustable wrenches.

The prime object of the invention ist-o provide a simple, novel,durable, economical and efiicient wrench preferably formed from a singlepiece of spring` steel metal possessing sufficient resiliency toaccomplish the proper adjustment of the wrench in the operation thereof.

Further objects of the invention are to so construct my improved wrenchthat the resiliency provided by its novel construction causes the twojaws to firmly set or draw together when brought into contact with pipe,nuts and other objects to be turned, or held, and to provide a handle sodisposed as to be substantially on a line parallel with 'the lowerextremity of the double jaw, thereby furnishing a maximum fulcrum duringthe operation of the wrench.

The foregoing and such other objects as may appear from the ensuingdescription are accomplished by the precise construction, arrangementand formation of the parts hereinafter more fully described, illustratedin the accompanying drawings and particularly pointed out in the claimsappended hereto, it being understood that slight changes in the preciseshape, proportions and minor details of construction may be vresorted towithout departing from the spirit or sacrificing any of the advantagesof the invention.

In the accompanying drawings forming a part of this specification itwill be seen that:

Figure 1 represents a side elevation of a wrench constructed inaccordance with and embodying` my invention. j

Figure 2 is a similar view showing a sligjghtly modified form of wrench,and

Figure 3 is atop plan of the type of wrench shown in Fig. 2.

In the embodiment of my invention as illustrated in Iii 1, the numeral 1designates the wrench preferably formed by forging or stamping it from asingle piece of steel, and comprising' a handleQ. an outer main 'iawmember 3 provided with a series of teeth 4 formed in the inner edge ofsaid jaw, and at the rear of the said member 3 is disposed an innersupplemental or additional jaw member 5, the outer face or edge G of themember 5 being` inclined upwardly and outwardly in a direction oppositeto the inner face or toothed edge 4 of the member 3, and said edge 1927.Serial No. 207,505.

of the face 6 may be serrated or roughened in any suitable manner, ifdesired.

At the rear of jaw member 5 is formed a slot- 7 extending downwardly andterminatingin the body portion of the wrench, while in the neck portion8 of the jaw member 3 adjacent the body portion and handle is formed aplurality of notches 9 in its outer face or edge, said notches inconnection'with the slot 7 formed between said neclr portion and jawmember 5, providing the desired resiliency for its adjustment during theoperation of the wrench, and since the handle member is formed in aplane substantially parallel with the lower level of the jaw members themaxiinun'i leverage and power are thereby obtained.

In the modified form shown in Figs. 2 and 3, I provide each side of thehandle member with a depressed or recessed portion 10, and the innerface or edge of the main jaw member is provided with a widened toothedgripping surface 11, and the outer face or edge of thesupplemental jawmember 5 is also provided with a widened gripping surface 12, and at therear of said jaw member 5 is a slot formation 13 terminating with anenlargement 14 atits lowermost end, while the inner edge or face of theneck portion 15 of the main jaw member is provided with a plural ity ofnotches 16, which formation is adapted to furnish the desired resiliencyfor the practical adjustmentof the wrench, and permits the two jaws tofirmly set or draw together when brougight Vinto contact with pipe, nutsand other objects to be turned or ri gully held during the operation ofthe wrench.

It will be readily perceived that the type of wrench' hereinbeforedesmfibed may be formed from cold rolled steel, or other suitablen'iaterial, such as tool steel, and in the smaller sizes it will bepreferable to stamp them out of a single piece of suitable metal.

Having thus described my invention what I claim and desire to secure byLetters Patent is:

1. A. wrench of the character described, comprising a plurality of jawmembers, each jaw member being inclined in ya direction opposite to theother, a solid integral handle member, and a slotted formation disposedat the rear of one of the jaw members and termin ating at the lower endportion of the inner jaw.

2. A wrench of the character described,

comprising an outer jaw member and an innatingat the lower end portionof the inner ner member, the inner ac'eof said jaw Jew, a' solidintegral handle member, and a.

vided-With a neck'po-rtion 'and en inner-supplemental `jawvmember,Itheinnerhfaee of thej-rearof the inner jaw member and ter-mif the handlemember.

members being inclined in oppositedirections, plurality of notchesformed at one side of solid integral handle member, and i Aslottedv theneck portion of the main jaw member adformationdisposed'atth'e`iear4othinnetawljacent the inner en'd portion of thesaid handle member and terminating at the lower end member.

Vportion of said inner jaw att-lie inner errdofr 4. A wrench of thecharacter described,

comprising` an outer jaw member and an innrjaw member, said jaws beinginclined in opposite directions, a solid integral handle member, aslotted formation disposed a't the rear of the inner jaw member, saidhandle 1 member being disposed substantially parullelfwitli the lowerlevel of the 'aw members.

" HARRY G1. ORWOOD.

3. A Wrench of the vc'hara'cten'described, comprising a main outer jawmemberiprofeaeli aw'y memberbeing inclined in opposite directions, I aslotted formation disposed at

